package cn.iune.erp.inventory;

import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.NoResultException;
import javax.persistence.Query;

import org.springframework.stereotype.Repository;
import com.alibaba.fastjson.JSONObject;
import com.justep.baas.Utils;
import com.justep.baas.data.DataUtils;
import com.justep.baas.data.Table;
import com.justep.baas.data.Transform;

import cn.iune.common.base.BaseJPAImpl;


@Repository
public class FileUnitDaoJPAImpl extends BaseJPAImpl<FileUnit> implements IFileUnitDao {

//	private final Logger log = LoggerFactory.getLogger(FileUnitDaoJPAImpl.class);

	
//	@PersistenceContext
//	private EntityManager em ;

	@Override
	public void insert(FileUnit obj) {
		em.persist(obj);
	}

	@Override
	public void update(FileUnit obj) {
		em.merge(obj);
	}

	@Override
	public void delete(String fID) {
		em.remove(em.getReference(FileUnit.class, fID));
	}

	@Override
	public FileUnit getByID(String fID) {
		FileUnit singleResult = em.find(FileUnit.class, fID);
		return singleResult;
	}

	@Override
	public List<FileUnit> getAll() {
		Query query = em.createNamedQuery("FileUnit.findAll");
		@SuppressWarnings("unchecked")
		List<FileUnit> resultList = query.getResultList();
		return resultList;
	}

	@Override
	public FileUnit getByNo(String unitCode, String enterpriseNo) {
		//1、定义sql语句
		String kSql="SELECT FileUnit FROM FileUnit FileUnit "
				+ " WHERE ( FileUnit.unitCode = :unitCode ) "
				+ " AND ( FileUnit.enterpriseNo = :enterpriseNo ) "
				;

		Query query = em.createQuery(kSql);
		query.setParameter("unitCode", unitCode);
		query.setParameter("enterpriseNo", enterpriseNo);
		FileUnit singleResult = null;
		try{
			singleResult = (FileUnit) query.getSingleResult();
		}catch(NoResultException e){
			//捕获没有结果的异常
			//避免抛出异常而中断对前台的相应。
		}finally{
		}
		return singleResult;
	}


	/*
	public JSONObject query(JSONObject data) throws Exception {
		
		// 获取参数
		Object columns = data.getJSONObject("columns"); // 列定义
		Integer limit = data.getInteger("limit"); // 分页查询的行数
		Integer offset = data.getInteger("offset"); // 分页查询的行偏移
		String search = data.getString("search"); // 检索关键字
		String filter = data.getString("filter"); // 过滤条件
		
		
		// 存放SQL中的参数值
		List<Object> sqlParams = new ArrayList<Object>();
		// 存放SQL中的过滤条件
		List<String> filters = new ArrayList<String>();
		if (!CommonService.isEmptyString(search)) {
			// 增加过滤条件
			filters.add("unitCode LIKE ? OR unitName LIKE ? OR unitType LIKE ?");
			// 检索关键字中如果没有%，则前后自动加%
			search = (search.indexOf("%") != -1) ? search : "%" + search + "%";
			// sqlParams的参数个数和顺序必须与过滤条件的?相匹配 
			for (int i = 0; i < 3; i++) {
				sqlParams.add(search);
			}
		}
		//处理过滤条件
		if (!CommonService.isEmptyString(filter)) {
			filters.add(filter);
		}

		
		// 按用户ID过滤，用于主从数据示例
		
//		String userID = data.getString("userID");
//		if (!CommonService.isEmptyString(userID)) {
//			filters.add("fUserID = ?");
//			sqlParams.add(userID);
//		}
		
		
		Table table = null;
		// 获取数据源连接
		Connection conn = Util.getConnection(DATASOURCE_U2);
		try {
			// 执行单表数据查询，返回Table
			table = Util.queryData(conn, TABLE_U2_FILEUNIT, columns, filters, "cDatetime DESC", sqlParams, offset, limit);
		} finally {
			// 必须关闭数据源连接
			conn.close();
		}
		
		JSONObject json = Transform.tableToJson(table);

		return json;
	}

	public int save(JSONObject object) throws Exception {
		// TODO Auto-generated method stub

		log.info("@RequestParam------"+object.toJSONString());
		// JSON转换Table
		Table table = Transform.jsonToTable(object);

		// 获取数据源连接
		Connection conn = Util.getConnection(DATASOURCE_U2);
		try {
			// 开启事务
			conn.setAutoCommit(false);
			try {
				// 保存Table
				Util.saveData(conn, table, TABLE_U2_FILEUNIT);
				// 提交事务
				conn.commit();
			} catch (SQLException e) {
				// 如果发生异常，首先回滚事务，然后把异常继续抛出
				conn.rollback();
				throw e;
			}
		} finally {
			// 必须关闭数据源连接
			conn.close();
		}

		return 0;
	}
	*/
	
	@Override
	public JSONObject queryJDBC(JSONObject data) throws Throwable{
		
		// 获取参数
		JSONObject columns = data.getJSONObject("columns"); // 列定义
		String orderBy = data.getString("orderBy"); // 排序
		Integer limit = data.getInteger("limit"); // 分页查询的行数
		Integer offset = data.getInteger("offset"); // 分页查询的行偏移
		String search = data.getString("search"); // 检索关键字
		String filter = data.getString("filter"); // 过滤条件
		String id = data.getString("id");

		String format = "SELECT %s FROM %s %s %s ";
//		String format = "SELECT ShopCart FROM ShopCart ShopCart %s %s ";
		String select = "FileUnit.*";
		String from = "FileUnit FileUnit";
		
		String where = "";

		
		// 存放SQL中的参数值
		List<Object> sqlParams = new ArrayList<Object>();
		// 存放SQL中的过滤条件
		List<String> filters = new ArrayList<String>();
		
		if (Utils.isNotEmptyString(search)) {
			// 增加过滤条件
			filters.add("unitCode LIKE ? OR unitName LIKE ? ");
			// 检索关键字中如果没有%，则前后自动加%
			search = (search.indexOf("%") != -1) ? search : "%" + search + "%";
			// sqlParams的参数个数和顺序必须与过滤条件的?相匹配 
			for (int i = 0; i < 2; i++) {
				sqlParams.add(search);
			}
		}
		
		//处理过滤条件
		if (Utils.isNotEmptyString(filter)) {
			filters.add(filter);
		}
		//处理id
		if (Utils.isNotEmptyString(id)) {
			filters.add("fID='"+id+"'");
		}
	
		
		if(filters != null && filters.size() > 0){
			if(where.indexOf("WHERE")== -1){
				//不包含WHERE关键字
				where = "WHERE " + DataUtils.arrayJoin(filters.toArray(), "(%s)", " AND ");
			}else{
				//已包含
				where = where + " AND " + DataUtils.arrayJoin(filters.toArray(), "(%s)", " AND ");
			}
		}
		//orderBy = "sortNo ASC";
//		String where = (filters != null && filters.size() > 0) ? " WHERE " + CommonService.arrayJoin(filters.toArray(), "(%s)", " AND ") : "";
		orderBy = Utils.isNotEmptyString(orderBy) ? " ORDER BY " + orderBy : "";
		
		String sql = String.format(format, select, from, where, orderBy);
		
//		Connection conn = DataUtils.getConnection(DataUtils.DATASOURCE_1);
		Connection conn = super.getConnection();
		String sqlTotal = String.format(format, "COUNT(*)", from, where, "");
		Object total = DataUtils.getValueBySQL(conn, sqlTotal, sqlParams);
		//SELECT ShopCart.fID FROM ShopCart ShopCart    LIMIT 0,-1//为-1时报错。
		if(limit==-1){
			limit = Integer.parseInt(total.toString());
		}
		
//		Table table = DataUtils.queryData(conn, tableName, columns, filters, orderBy, params, offset, limit);
		Table table = DataUtils.queryData(conn, sql, sqlParams, columns, offset, limit);
		//关闭连接
		conn.close();

		table.setTotal(Integer.parseInt(total.toString()));
		JSONObject json = Transform.tableToJson(table);
		
		return json;
	}
	
	
}
